Jeep CJ7 Drivetrain and Differentials. One of the weaknesses of the Jeep CJ7 is its relatively fragile axle components. Improve your Jeep's durability and performance with these CJ7 drivetrain and differential upgrades and OEM replacement parts.

About the Jeep CJ7 The Jeep CJ, precursor to the more contemporary Jeep Wrangler, began its long automotive run as a military vehicle in the mid-1900s. A rugged, virtually bomb-proof SUV with an emphasis on utility, the CJ- standing for Civilian Jeep"- is a two-door, 4-wheel drive convertible with seating for four.